The correct answer is: b) Patna.
Patna is the capital and largest city of the Indian state of Bihar. It is the 19th most populous city in India and the 13th most populous urban agglomeration in India. Patna is the seat of the Patna High Court and the Patna University. It is also home to the Gandhi Maidan, which is the largest park in India.
Gaya is a city in the Indian state of Bihar. It is the headquarters of Gaya district and Gaya division. Gaya is a major pilgrimage site for Hindus and Buddhists. The city is home to the Mahabodhi Temple, which is a UNESCO World Heritage Site.
Muzaffarpur is a city in the Indian state of Bihar. It is the headquarters of Muzaffarpur district and Muzaffarpur division. Muzaffarpur is a major commercial and educational center in Bihar. The city is home to the University of Agriculture and Technology, Muzaffarpur.
Bhagalpur is a city in the Indian state of Bihar. It is the headquarters of Bhagalpur district and Bhagalpur division. Bhagalpur is a major industrial and educational center in Bihar. The city is home to the Tilka Manjhi Bhagalpur University.